DataPipe naming convension update (#51262)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/51262
Test Plan: Imported from OSS
Reviewed By: ejguan
Differential Revision: D26120628
Pulled By: glaringlee
fbshipit-source-id: 6855a0dd6d4a93ff93adce1039960ffd7057a827
